diff --git a/src/merge.rs b/src/merge.rs
index eb9365d..472e74f 100644
--- a/src/merge.rs
+++ b/src/merge.rs
@@ -1,6 +1,6 @@
-use std::fs;
 use std::io::Result;
 use std::path::{Path, PathBuf};
+use std::{fs, io};
 
 fn guess_video_path(path: &Path) -> Result<PathBuf> {
     let mut largest_size = 0;
@@ -23,7 +23,16 @@ fn guess_video_path(path: &Path) -> Result<PathBuf> {
 
 pub fn merge_video_from_path(path: &Path) -> Result<()> {
     let video_path = guess_video_path(path)?;
-    let video_name = video_path.file_name().unwrap();
+    let video_name = video_path.file_name().unwrap().to_str().unwrap();
+    let video_extension = video_path.extension().unwrap();
+
+    let audio_name = format!("{}.m4a", &video_name[..video_name.len() - video_extension.len() - 1]);
+    let audio_path = video_path.parent().unwrap().join(audio_name);
+    if !audio_path.exists() {
+        return Err(io::Error::new(io::ErrorKind::NotFound, "Audio file does not exist"));
+    }
+
+    println!("Merging video from {:?}", audio_path);
     println!("Merging video {:?}", video_name);
 
     Ok(())